(M1.EB.28)
A 75-year-old patient presents to the dermatologist with a 4 cm brown lesion on the right cheek (Figure A). The patient states that the lesion has been there for years but just recently began to change in appearance. She has noticed cracking and oozing from the lesion over the past few months. Which cell line most directly gives rise to the pathologic cell in this patient?
Review Topic

(M1.EB.28)
A 52-year-old woman sees you in her office with a complaint of new-onset headaches over the past few weeks. On exam, you find a 2 x 2 cm dark, irregularly shaped, pigmented lesion on her back. She is concerned because her father recently passed away from skin cancer. What tissue type most directly gives rise to the lesion this patient is experiencing?
Review Topic

(M1.EB.63)
Twenty-four hours after birth, a male newborn has not passed meconium. The newborn's abdomen is distended and he has had two episodes of bilious vomiting. Based on findings during physical exam of the patient (Figure A), for which other abnormalities should this patient also be evaluated?
Review Topic